Breathing mask device and application device and frontal support device thereof

ABSTRACT

The invention concerns a breathing mask arrangement for feeding a respiratory gas to a patient. The invention further concerns a forehead support device for same. The breathing mask arrangement according to the invention includes an arch body, a sealing lip means for bearing against the surface of the face of a mask user, a respiratory gas conduit means for feeding respiratory gas to a mask internal space which is defined by the arch body and which is in communication with the nose and/or mouth opening of the user of the mask. The breathing mask arrangement according to the invention is distinguished by an application structure for application of the sealing lip means jointly with the arch body, wherein the application structure has a carrier portion on which a respiratory gas conduit member in the form of a docking port is releasably mounted. The forehead support device according to the invention includes a contact element provided in the application position of the breathing mask for bearing against the forehead region of a user of the mask, and a holding device for holding the contact element in tiltably movable manner. By virtue thereof, even when using a contact element of comparatively large area, that provides for good adaptability to the most widely varying facial architectures.

FIELD OF THE INVENTION

[0001] The invention concerns a breathing mask arrangement as can beused for example in the context of CPAP-therapy for treatingsleep-related breathing disorders. The invention further concerns aforehead support device for a breathing mask arrangement.

BACKGROUND OF THE INVENTION

[0002] In the context of what is referred to as CPAP-therapy a patientcan be supplied by way of a breathing mask arrangement with a breathablegas, in particular ambient air at a pressure level which is above theambient pressure level. The respiratory gas which is under pressuremakes it possible to provide for pneumatic splinting of the upperrespiratory tracts and thus to obviate any obstructions. In the courseof implementing pressure respiration or CPAP-therapy the breathing maskarrangements which are required to supply the respiratory gas areusually worn by the patient over the entire sleep or rest phase of thepatient. The breathing mask arrangement is usually supported by way of asealing lip zone in the region around the nose of the person using themask and by way of a forehead support device in the forehead region ofthe mask user. The holding forces required to apply the breathing maskarrangement can be afforded by a fixing device which for example has aheadband which is passed around the back of the head of the mask user.Under some circumstances, in the region in which the sealing lip deviceis applied and in the contact region of the forehead support device,surface pressures can occur, which result in the level of comfortinvolved in wearing the breathing mask arrangement being seriouslyadversely affected. In dependence on the individual architecture of theface of the person wearing the mask, considerable mask-pressing forcesare in part required in order to achieve the desired sealing integrity.In that situation, in the region of the zones where the breathing maskbears against the face of the patient, unacceptably clearly visiblepressure points may also be caused in the forehead region.

OBJECT OF THE INVENTION

[0003] The object of the invention is to provide a structure by which abreathing mask arrangement can be fixed in a correct applicationposition and a high level of wearing comfort can be acheived. Attainmentof the object in accordance with the invention

[0004] In accordance with the invention that object is attained by abreathing mask arrangement comprising an arch body, a sealing lip meansfor bearing against the surface of the face of a mask user, arespiratory gas conduit means for feeding respiratory gas to a maskinternal space which is defined by the arch body and which is incommunication with the nose and/or mouth opening of the user of themask, and an application structure for application of the sealing lipmeans jointly with the arch body, wherein the application structure hasa carrier portion on which a respiratory gas conduit member is mounted.

[0005] In that way it is advantageously possible to provide a breathingmask arrangement which is of a robust structure and which can be cleanedin an advantageous manner and which is distinguished by a high level ofsealing integrity.

[0006] In accordance with a particularly preferred embodiment of theinvention the respiratory gas conduit member is in the form of a tubeconnection. Such a tube connection is preferably made fromdishwasher-resistant plastic material so that the respiratory gasconduit member can be cleaned at comparatively high temperatures and inthe process sterilised. The tube connection is preferably of such aconfiguration that its inside diameter is in the range of 12 to 34 mm.The tube connection can be of a substantially circular or preferablypolygonal cross-section. The tube connection can be in the form of aconduit bend which provides for a slight change in direction of the flowof respiratory gas through an angle in the range of from 0 to 45°.

[0007] The conduit member which in particular is in the form of a tubeconnection is preferably releasably mountable to the carrier portion. Alatching device is preferably provided for coupling the respiratory gasconduit member to the carrier portion. In accordance with a particularaspect of the present invention that latching device is advantageouslyin the form of a bayonet or rotational latching device.

[0008] The application structure of the breathing mask arrangementadvantageously includes a frame portion which can be releasably coupledto the sealing lip means and/or to the arch body. Preferably the frameportion is designed in such a way that it embraces the arch body in aring or loop configuration. The carrier portion is advantageously madefrom a plastic material and is provided with holding members, by way ofwhich the carrier portion can be coupled for example to a lower web bandarrangement of a headband. Advantageously those holding members are inthe form of holding loops or clips, through which an end portion of theabove-mentioned lower web band arrangement can be passed. The holdingloops are preferably formed integrally with the carrier portion. Theinternal peripheral wall of a through opening formed by the holdingloops is preferably of a configuration which, in regard to the mouldingtool, permits removal of the holding loops from the mould withoutinvolving the use of a sliding pusher member.

[0009] The carrier portion provided for fixing the respiration gasconduit member is advantageously formed integrally with the frameportion. In that respect the carrier portion is advantageously designedin such a way that it has an insert opening into which the respiratorygas conduit member can be releasably inserted. The carrier portion ispreferably arranged in such a way that it extends substantiallyperpendicularly to a frame surface defined by the frame portion.

[0010] In the region of the insert opening, the carrier portionpreferably forms those coupling structures which can be brought intoengagement with the respiratory gas conduit member which is in the formof the tube connection.

[0011] The arch body preferably comprises a coupling portion, by way ofwhich the arch body can be sealingly connected to the respiratory gasconduit member. Preferably the arch body is produced from an elastomermaterial and fitted with elastic expansion thereof on to a portion ofthe tube connection, which is passed through the insert opening andwhich penetrates to the sealing lip means. Preferably, a peripheral beador ridge is provided on that portion of the tube connection, whichextends as far as the sealing lip means, by means of which peripheralbead the arch body and the tube connection are reliably held in thejoined condition.

[0012] In accordance with a particularly preferred embodiment of theinvention the arch body is formed integrally with the sealing lip means.In that way it is advantageously possible to avoid gaps or joints in thetransitional region between the sealing lip means and the arch body. Inaddition it is advantageously possible for the sealing lip means and thearch body to be inserted in the form of an integral elastomer componentinto the frame portion.

[0013] In accordance with a particularly preferred embodiment,particularly reliable discharge of respiratory gas loaded with CO₂ tothe ambient atmosphere is attained in that the arch body is providedwith openings through which the respiratory gas which is under pressurein the internal region of the arch body can escape to the ambientatmosphere. The openings are preferably such that the cross-sectionthereof enlarges in the outlet direction. Those outlet openings arepreferably arranged in such a way that they are disposed as closely aspossible to the region which, in the position of application of thebreathing mask arrangement, is adjacent to the nasal openings of a userof the mask.

[0014] In accordance with a particular aspect of the present inventionthe application structure includes a forehead support device forsupporting the breathing mask arrangement in the forehead region of theuser of the mask. The forehead support device is advantageouslyconnected by way of a pivot device to the frame portion which embracesthe arch body. By virtue of that configuration it is advantageouslypossible for the position of the forehead support device to be adaptedto the individual facial architecture or structure of the user of themask. Preferably the pivot device includes an arcuate track guide meansby which the forehead support device can be variably positioned.

[0015] The respiratory gas conduit member which is preferably releasablycouplable to the carrier portion advantageously forms a docking portwhich for example can also form part of a rotary coupling structure. Itis possible to provide on the docking port further connecting devices,in particular small tube connections, by way of which for example apressure measuring hose can be coupled to the breathing mask arrangementor possibly an additional supply of oxygen can be effected.

[0016] The forehead support device is preferably made from athermoplastic material and provided with a forehead cushion means. Theforehead cushion means is preferably formed by elastomer elements whichare of a pad-like configuration and which can be coupled by way of aplug connecting structure to the receiving portion of the foreheadsupport device, said receiving portion preferably being of a loop-likeconfiguration. In that case the forehead support device is preferablydesigned in such a way that the elastomer elements can be fitted to theforehead support device at different locations. Preferably the elastomerelements are also of such a configuration that, by virtue of the way inwhich they are fixed to the loop portion, it is also possible to achievedifferent positions of the contact regions of the elastomer elements onthe forehead of the user of the mask. The elastomer elements arepreferably made from a silicone rubber material and in the region oftheir contact surface are so shaped that transmission of the contactforces to the surface of the forehead of the user of the mask takesplace under a physiologically well compatible surface pressure. That canbe achieved in particular by the elastomer elements being provided, on arear side remote from their contact side, with an eccentrically arrangedsupport foot which permits a tilting movement of the contact portionwhich bears against the user of the mask.

[0017] Preferably, also provided on the loop portion are couplingportions which permit coupling of the forehead support device to anupper forehead band arrangement of a headband. Those coupling portionscan be in the form of a band strip. It is also possible for the foreheadsupport device to be fixed for example by way of a hook-and-loopfastener to a preferably cushioned forehead band arrangement.

[0018] In accordance with a further aspect of the invention, anotherobject of the invention is to prevent the occurrence of any pressurepoints in the forehead region in connection with the use of breathingmasks.

[0019] In accordance with the invention that object is attained by aforehead support device for a breathing mask comprising a contactelement which is provided in the application position for bearingagainst the forehead region of a user of the mask, wherein there isprovided a holding device for holding the contact element movably.

[0020] By virtue thereof it is advantageously possible to ensure that abreathing mask arrangement is supported in the forehead region of apatient under a markedly reduced surface pressure against the tissue ofthe patient. The mobility of the contact element, which is provided inaccordance with the invention, means that it can automatically adapt tothe individual curvature of the forehead region of the user of the mask.In that way it is further advantageously possible for the contactelement to afford a large surface area, whereby it is advantageouslypossible to achieve a marked reduction in the surface pressure.

[0021] An embodiment of the forehead support device, which is preferredin accordance with a particular aspect of the present invention, isafforded in that the holder is in the form of a pivotal holder. Thatpivotal holder advantageously permits a tilting movement of the contactelement about at least one axis substantially parallel to the usualcontact orientation. That pivotal holder can preferably be formed by apivot or hinge device which in accordance with a particularly preferredembodiment includes a ball joint. As an alternative thereto or also incombination with that configuration, it is possible for the pivot deviceto be formed by an elastomer structure. The range of movement of theholder of the contact element is preferably in the range of 10-30°. Itis possible to take sufficient account of all possible foreheadarchitectures within that angular range.

[0022] In accordance with a particular aspect of the present inventionthe contact element is formed from an elastomer material, for example afully transparent or coloured silicone rubber material. Particularly inthis embodiment the contact element is of a preferably pad-like orplate-like configuration. In that case, the contact element ispreferably concavely inwardly curved in such a way that a defineddistribution in terms of surface pressure is afforded when the contactelement is applied to the surface of the forehead. In accordance with aparticularly preferred embodiment of the invention that surface pressureis so selected that, within a predetermined spacing from the edge of thecontact element, there is a substantially uniform surface pressure, withthe surface pressure gradually decreasing outwardly in the edge regionof the contact element.

[0023] In accordance with a particularly preferred embodiment of theinvention the forehead support device includes a plurality of andpreferably two mutually adjacently arranged contact elements. Thecontact elements are preferably arranged in such a way that in theapplication position of a breathing mask arrangement, they arepositioned above the left and right eyebrows of the user of the mask.The two contact elements are preferably connected together by way of aflexible bridge or strap device. In that way, it is possible on the onehand to achieve a greater increase in the contact area while at the sametime the possibility of the contact elements twisting relative to eachother can be limited in a defined manner. Particularly in thisembodiment the two contact elements are preferably formed integrallywith each other. The configuration of the contact elements in a planview is not limited to substantially circular external contours. Forexample it is also possible to adopt elliptical or other polygonalexternal contours.

[0024] The pivot device for pivotably movably mounting the respectivecontact element is preferably also formed integrally with the contactelement. A defined pivot character can be achieved by virtue of suitablegeometrical configuration of the pivot device.

[0025] The pivot device is preferably arranged in such a way that it isdisposed on or at least near the line of action of a force which extendsthrough a centre point in terms of surface pressure of the respectivecontact element. That still further promotes rendering the distributionof surface pressure uniform.

[0026] The contact elements are preferably profiled in such a way thatthe contact element is prevented from being applied by suction to thesurface of the forehead of the patient. Suction of the forehead supportdevice on the surface of the forehead of the patient can further also beobviated by the contact element being provided with through bores oralso with passages, through which air can pass into an intermediateregion between the contact element and the forehead of the user of themask.

[0027] The ball joint structures advantageously provide for goodadaptability to the horizontal and vertical configuration of theforehead of the user of the mask. The pivot device—in particular theball joint means—can also be designed to be lockable. The pivot devicecan also preferably be tiltable in a particularly advantageous mannerabout given axes—in particular about a horizontal axis. The curvature ofthe contact element can be so selected that different radii of curvatureare afforded in the horizontal and vertical directions. The radii ofcurvature are preferably smaller than the usual radii of curvature of aforehead.

[0028] As an alternative to ball joint structures it is also possible toadopt cardanic suspension means, for example by means of a pivot pin.The angle of pivotal movement of the pivot device is preferably limitedto a predetermined abutment angle. The material properties of thecontact element are preferably so selected that it has a substantiallyanti-bacterial action and possibly acts to promote the healing ofwounds.

[0029] Advantageously, a cushion means, in particular a gel body cushionmeans, or also an air or liquid cushion means, can be provided in theregion of the contact surface. In that case, by varying the amount ofliquid, air or gel used, it is advantageously possible to adjust theposition of the breathing mask relative to the user.

[0030] Advantageously the mounting position of the contact element isadjustably variable. As an alternative thereto—or also in combinationwith this feature—it is also possible to provide a plurality of couplingoptions so that it is possible to achieve varying spacings on theforehead, by suitable selective coupling. It is possible to implementcoarse adjustment by for example two, preferably three or also morecoupling options, and to implement preferably stepless fine adjustmentwithin a limited fine adjustment range. It is possible to permit aplurality of permutation options, in which case the individual couplingpermutations result in respectively different settings in terms of thespacing relative to the forehead. It is also possible to provideclamping structures, by means of which stepless adjustment of thespacing relative to the forehead is possible. The coupling means can beso designed that a defined adhesive location is achieved, so that asetting which is individually steplessly adapted is durably maintainedby adhesive means.

[0031] In accordance with a particularly preferred embodiment of theinvention a particularly high level of wearing comfort is achieved inthat the surface portions of the contact element, which come intocontact with the surface of the skin of the user of the mask, have asurface which is velvety matt. In accordance with a particularlypreferred embodiment of the invention, at least in the region of thecontact surface of the contact element, there is provided a surfacestructure for affording a self-cleaning effect. Such a surface structuremay have for example lotus leaf surface structures. The contact elementmay also be provided with a gel body, at least in the region of thecontact surface.

[0032] In accordance with a further aspect of the invention Inaccordance with the invention the object specified in the opening partof this specification is attained by an application device for abreathing mask arrangement comprising a forehead support device, whereinthe forehead support device has a right arm element and a left armelement and the arm elements are provided with a contact portionprovided for bearing against a left and right forehead zone respectivelyand each of the arm elements is arranged pivotably movably about a pivotaxis.

[0033] That advantageously makes it possible for the breathing maskarrangement to be supported in the forehead region of the mask user byway of a forehead support device which can advantageously be adapted todifferent facial architectures.

[0034] In accordance with a particularly preferred embodiment of theinvention there is provided an adjusting drive device for deflection ofthe arm elements into a predetermined pivotal position. The adjustingdrive device is preferably designed in such a way that both arm elementsare pivotable by way of the adjusting drive device simultaneously, thatis to say at the same time. The adjusting drive device may include forexample an adjusting wheel which, by way of a screw or spiral drivemeans, is in engagement with actuating members which are displaceableradially with respect to an axis of rotation of the pivot wheel.

[0035] Preferably the pivot axes of each of arm elements are directed insuch a way that viewed in the application position in a front view, theyextend transversely and in particular perpendicularly with respect to atransverse line joining the eyebrows. That advantageously makes itpossible for the forehead support device to be precisely adapted to thecurvature of the forehead of the user of the mask and thereby toprecisely set the breathing mask which is held by the application devicein the region of the contact zone of the sealing lip device, whichcontact zone crosses over the bridge of the nose.

[0036] In accordance with a particular aspect of the present inventioneach of the arm elements is pivotable about its own pivot axisassociated therewith, wherein the pivot axes of the two arm members arespaced from each other at the level of a transverse line joining theeyebrows. The spacing of two pivot axes of the arm members is preferablybetween 10 and 50 mm at the level of the transverse line joining theeyebrows. The length of the arm members is between about 25 and 75 mmdepending on the respective spacing of the pivot axes.

[0037] In accordance with a further aspect of the present invention,adaptability, which is still further increased in comparison with theabove-described embodiment, of the forehead support device to theindividual curvature of the forehead of the user of the mask, isachieved if the pivot axes of the arm members are inclined relative toeach other through an angle α in the range of between 8 and 45° relativeto each other. It is advantageously possible for the structure definingthe pivot axes to be designed in such a way that the angle α of thepivot axes relative to each other is adjustably variable.

[0038] Preferably the pivot axes are established in such a way that, inrelation to a front view of a user of the mask, they intersect in theregion between the transverse line joining the eyebrows and the chin ofthe user of the mask. That affords particularly good compatibility inrelation to the facial architectures which statistically predominantlyprevail.

[0039] The pivot axes are preferably each defined by a respective hingedevice. The hinge devices can be in the form of multi-part pivotarrangements or, in accordance with a particularly preferred embodimentof the invention, they can be in the form of film hinges. With thatembodiment it is possible for the arm members and the hinge basicstructures provided for pivotably mounting the arm members to beproduced in one piece, that is to say integrally from a plasticmaterial.

[0040] In accordance with a particular aspect of the present inventionthe adjusting drive device includes an adjusting wheel which is coupledby way of a spiral structure to actuating members by means of which thearm elements can be deflected into defined pivotal positions. Theadjusting wheel is preferably mounted rotatably about an axis which inthe application position of the application device is orientedsubstantially perpendicularly to the surface of the forehead of thepatient. The adjusting wheel is preferably of a diameter in the range ofbetween 20 and 50 mm and in the outside peripheral region it is providedwith a profiling, preferably a fluted or grooved structure, whichpermits the reliable transmission of the finger forces required forrotating the adjusting wheel. The adjusting wheel is preferably arrangedin an intermediate region between a respiratory gas conduit portion ofthe breathing mask arrangement and a base portion of the foreheadsupport device. In that case it is possible for the finger forces whichare required to rotate the adjusting wheel to be applied by way of thethumb and the index finger, in which case the respiratory gas conduitassociated with the breathing mask arrangement is embraced by thefingers, by using the thumb and the index finger.

[0041] In accordance with a further aspect of the invention, inaccordance with the invention the object thereof as set forth in theopening part of this specification is also attained by an applicationdevice for a breathing mask arrangement having a forehead supportdevice, wherein the forehead support device has a right arm element anda left arm element and both arm elements are pivotably movably coupledto a breathing mask by way of a pivot axis, wherein the pivot axesextend substantially parallel to a transverse line which in theapplication position of the breathing mask arrangement joins theeyebrows of a user of the mask and there is provided an adjusting drivedevice for establishing the pivotal position of the arm elements.

[0042] In that way it is advantageously possible, by way of the foreheadsupport device, to adjust the contact pressure of a zone of the sealinglip device, which passes across the bridge of the nose of a user of themask.

BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Further details and features of the invention will be apparentfrom the description hereinafter with reference to the drawings inwhich:

[0044]FIG. 1 shows a perspective view of a breathing mask arrangementaccording to the invention,

[0045]FIG. 2 shows a further perspective view of the breathing maskarrangement according to the invention without hose connecting sleeve,

[0046]FIG. 3 shows a perspective view of the application structure ofthe previously illustrated breathing mask arrangement,

[0047]FIG. 4 shows a perspective view of the application structure witha docking port connected thereto,

[0048]FIG. 5 shows a perspective view of an integral member formed froma carrier portion and a frame portion,

[0049]FIG. 6 shows a further perspective view of the integral membershown in FIG. 5 to describe the latching device provided for couplingthe docking port,

[0050]FIG. 7 shows a side view of the breathing mask arrangementaccording to the invention,

[0051]FIG. 8 shows a simplified perspective view of a forehead supportdevice with two pivotably mounted pad-like contact elements and by wayof indication a breathing mask,

[0052]FIG. 9 shows a simplified sectional view to illustrate a preferredembodiment of a pivotably mounted contact element,

[0053]FIG. 10 shows a plan view of two contact elements which are formedintegrally with each other, each of which is individually provided witha pivotal mounting means,

[0054]FIG. 11 shows a further embodiment of a contact element with aconcavely curved contact surface and a part-spherical portion forpivotably mounting the contact element,

[0055]FIG. 12 shows a sketch to describe a preferred distribution ofsurface pressure from a central region of the contact element in itsvariation from a centre region of the contact element towards the edgeregion thereof,

[0056]FIG. 13 shows a front view of the face region of a person toexplain preferred contact zones of the forehead support device andpreferred orientations of the pivot axes which are crucial in terms ofpivotal mounting of the arm elements,

[0057]FIG. 14 is a perspective view to explain an adjusting drive devicefor adjustably pivoting the arm elements,

[0058]FIG. 15 shows a detail view to describe the structure of a variantof the adjusting drive, which is provided with film hinge structures,

[0059]FIG. 16 shows a further detail view to describe an embodiment ofthe adjusting drive device also with a film hinge and a spiral grooveregion which is provided at an underside of the adjusting wheel andwhich is directly in engagement with an engagement portion of an armelement,

[0060]FIG. 17 shows a simplified view in section of a further embodimentof an adjusting drive device with an arm element which is mountedpivotably by way of a pivot pin zone,

[0061]FIG. 18 shows a simplified side view of an application deviceprovided with a breathing mask arrangement,

[0062]FIG. 19 shows a simplified perspective view of an applicationdevice with integrated forehead support device for the application of abreathing mask,

[0063]FIG. 20 shows a side view of a breathing mask application devicewith a breathing mask arrangement pivotably movably accommodatedtherein,

[0064]FIG. 21 shows a detail view of a holding portion of an applicationdevice, which is provided for coupling to a breathing mask arrangement,

[0065]FIG. 22 shows a perspective view of an application device for abreathing mask arrangement as can be fitted for example onto arespiratory gas conduit portion of a breathing mask,

[0066]FIG. 23 is a perspective view of a forehead support device with aheadband portion and a coupling structure connected thereto forsupporting a conduit portion,

[0067]FIG. 24 shows a perspective view of a further embodiment of aforehead support device with an adjusting mechanism for adjusting theforehead spacing and the lateral position of a conduit portion,

[0068]FIG. 26 shows a detail view of an end region of a forehead contactportion with a loop support which terminates flat,

[0069]FIG. 27 shows a partial diagrammatic view to illustrate a screwspindle variant of an adjusting drive as can be used for example in theembodiment shown in FIGS. 24 and 25,

[0070]FIG. 28 is a diagrammatic view to illustrate a conduit portionmade from elastomer material with an integral mask connecting socketwhich can be supported in a forehead support device,

[0071]FIG. 29 shows a sectional view to illustrate a variant of theforehead support portion, which is of a cushioned configuration byvirtue of pores or caverns,

[0072]FIG. 30 is a sectional view through a connecting region formed inthe region of the forehead support, between the connecting portion of abreathing mask and a conduit portion (here the mask-side socket of awashing-out adaptor—AEROCLICK (registered trade mark of MAPMedizin-Technologie GmbH); Wisper-Swivel (Respironics));

[0073]FIG. 31 is a diagrammatic view to illustrate a further variantaccording to the invention of a forehead support device,

[0074]FIG. 32 shows an embodiment of a connecting adaptor with foreheadsupport adjustably pivoted thereto,

[0075]FIG. 33 shows a bent wire variant of the forehead support of FIG.32,

[0076]FIG. 34 shows a screwthread sleeve/spindle variant of theadjusting device of FIG. 32,

[0077]FIG. 35 shows an embodiment of a breathing mask arrangement with atube portion which is steplessly variable in curvature—and a foreheadsupport device coupled thereto,

[0078]FIG. 36 shows a side view of a further variant of avariable-curvature conduit portion, and

[0079]FIG. 37 shows a perspective view of a headband arrangement inparticular for use with the forehead support devices describedhereinbefore.

DETAILED DESCRIPTION OF THE DRAWINGS

[0080] The breathing mask arrangement shown in FIG. 1 includes a sealinglip means 1 made from an elastomer material, in particular siliconerubber, and an arch body 2. The sealing lip means 1 is designed in sucha way that it lines a receiving opening provided to receive the noseregion of a user of the mask, and in that situation preferably passesacross the bridge of the nose and the upper lip region of the user ofthe mask. In this case the sealing lip means 1 is of a substantiallysaddle-shaped silhouette. In this embodiment, the sealing lip means 1and the arch body 2 are made in one piece from an elastomer material andare accommodated in a frame portion 3.

[0081] The frame portion 3 is made from a plastic material and hasholding clips or loops 4 which are produced integrally therewith. In theapplication position of the breathing mask arrangement the holding loops4 are disposed at cheek level or at the level of the sides of the noseof the user of the mask and permit coupling of a lower web bandarrangement. For reliably coupling the arch body 2 to the frame portion3, there is a retaining structure 5, by way of which the arch body 2 canbe fixed to the frame portion 3 in the joining position by latchingengagement therein. The retaining structure 5 includes a retaining nose5 a which engages over a top side of the frame portion 3.

[0082] Provided on the arch body 2 are a plurality of outlet openings 6for the discharge of used respiratory gas to the ambient atmosphere.

[0083] The breathing mask arrangement further includes a carrier portion7 which in this embodiment is formed integrally with the frame portion3.

[0084] A respiratory gas conduit member which here is in the form of adocking port 8 is releasably fixed to the carrier portion 7. The dockingport 8 includes an annular flange (not visible here) on to which a hoseconnecting sleeve 9 is rotatably movably fitted. The hose connectingsleeve 9 includes a hose connecting portion 9 a on to which an endportion of a respiratory gas hose can be fitted.

[0085] The breathing mask arrangement according to the invention furtherincludes a forehead support device 10 which is coupled movably to theframe portion 3 by way of an adjusting device 11.

[0086] The adjusting device 11 is of such a configuration that itpermits a pivotal movement of the forehead support device 10 withrespect to the frame portion 3 about the pivot axis X which is shownhere. The adjusting device 11 includes a fixing mechanism, by which theforehead support device 10 and the frame portion 3 can be fixed in theselected relative position.

[0087] The forehead support device 10 includes a loop portion 12 towhich forehead cushion elements 14 can be mounted. Provided on the loopportion 12, similarly to the frame portion 3, are holding loops or clips15, for coupling the loop portion 12 to an upper web band arrangement ofa headband provided for fixing the breathing mask arrangement in place.

[0088] The forehead cushion elements 14 are made from an elastomermaterial and, on their underside 14 a which in the application positionfaces towards the user of the mask, form a contact surface involving apredetermined distribution in terms of surface pressure. The foreheadcushion elements 14 are each coupled to the loop portion 12 by way of arespective push-in foot 16. The push-in foot 16 is providedeccentrically on the respective forehead cushion element 14 in such away that pivoting the forehead cushion elements 14 about the axis 17 ofthe push-in foot, as indicated by the arrow P, makes it possible toachieve different contact positions for the underside 14 a of theforehead cushion elements 14 on the surface of the forehead of the userof the mask. Different contact positions can be achieved by virtue ofselection of the pivotal position of the forehead cushion element 14 andby virtue of selection of the receiving opening 18 provided to receivethe push-in foot 16. In the embodiment illustrated here, two mutuallyspaced receiving openings 18 are provided in the loop portion 12, foreach of the left and the right forehead cushion elements 14.

[0089] The forehead cushion elements 14 can be removed from the loopportion 12 by pulling the push-in feet 16 out of the receiving openings18, as is shown in FIG. 2. In this embodiment, the centre lines of thereceiving openings 18 are spaced from each other by approximately 10 mm.The eccentricity of the push-in foot 16 on the respective foreheadcushion element 14 (see in that respect FIG. 1) is also about 10 mm. Asa result of the eccentric arrangement of the push-in foot 16 and thespaced arrangement of the receiving opening 18, heightwise variabilityof the forehead cushion elements in a range of about 30 mm is achievedsubstantially perpendicularly to a line joining the eyebrows of the userof the mask. A variation in the contact position over a range of 20 mmis also possible in a lateral direction, that is to say in the directionof the above-mentioned line which joins the eyebrows. The holding loop15 provided for coupling an upper web band arrangement is arranged inthe proximity of the receiving openings 18 in such a way that thethrough opening 15 a defined by the holding loop is covered over towardsthe user of the mask by the forehead cushion element 14.

[0090] In the view shown in FIG. 2 the hose connecting sleeve 9 shown inFIG. 1 has been removed from the docking port 8. It is possible in thisview to see an annular flange 19 which is formed integrally with thedocking port 8 and which has a plurality of tongue elements 19 a whichare elastically deflectable towards the centre of the through passageformed by the docking port 8. Provided on the tongue elements 19 a is aretaining bead or ridge 20 which can be brought into engagement with aninternal peripheral groove provided in complementary relationship on thehose connecting sleeve 9. The geometry of the retaining bead 20, theinternal peripheral groove in the rotational sleeve 9 and the elasticityof the tongue elements 19 a are so matched that the hose connectingsleeve 9 can be withdrawn from the annular flange 19 without involvingthe use of a tool, when a given pulling force is exceeded. The annularflange 19 and the hose connecting sleeve 9 are also designed to fit insuch a way that the hose connecting sleeve 9 is easily rotatably carriedon the annular flange 19.

[0091] In this embodiment the docking port 8 is provided with hoseconnecting portions 21, 22, on to which a plug or hose element can befitted. The hose connecting portions 21, 22 each form a respectivethrough passage which opens into the respiratory gas passage formed inthe docking port 8. When not in use, the hose connecting portions 21, 22can be closed by a plug or cap element (not shown) which is preferablyfitted in frictionally locking relationship on the hose connectingportions 21, 22. In this embodiment the hose connecting portions 21, 22are arranged recessed in a groove which is delimited by two upstandinggroove walls 23, 24. The docking port 8 is coupled to the carrierportion 7 by way of a plug-in connecting structure.

[0092] The retaining connecting structure for coupling the docking port8 to the carrier portion 7, as can be seen from the view in FIG. 3, inthis embodiment, is in the form of a rotary latching or bayonetconnecting structure 25. The bayonet connecting structure 25 includestwo mutually diametrally opposite retaining bridges 27 which areseparated from each other by insertion recesses 26. In the lockingposition the retaining bridges 27 come into engagement with tworetaining projections which are provided on a push-in flange portion 28(FIG. 4) of the docking port.

[0093] The carrier portion 7 is formed integrally with the frame portion3 and in that respect forms the insert opening which is provided toreceive the insert connection 28 and which is partially lined by theretaining bridges 27. Provided in the transitional region between thecarrier portion 7 and the frame portion 3 are two guide flanks 30 whichare also provided integrally with the frame portion 3 and form part ofthe adjusting means 11. The guide flanks 30 form an arcuate guide means31 in which a coupling portion 32 of the forehead support device 10 isdisplaceably guided. The arcuate guide means 31 and the region of thecoupling portion 32, which is guided therein, are such that the foreheadsupport device 10 and the frame portion 3 are movable relative to eachother about the pivot axis X already shown in FIG. 1. Provided at theguide flanks 30 is an actuating zone 33, for applying a release forcefor moving the adjusting means 11 into a release position. The releaseforce can be applied to the actuating zone in particular when grippingaround the docking port 8 with the thumb and the index finger andapplying the corresponding fingertips. As an alternative to the arcuateguide means 31 provided here, it is also possible for the adjustingmeans 11 to be of such a configuration that relative movement is madepossible between the forehead support device 10 and the frame portion 3along a path of movement which differs from an arcuate path. It is alsopossible to mount to the forehead support device 10 forehead cushiondevices which in their structure differ from the forehead cushionelements 14 shown in FIG. 1.

[0094]FIG. 4 shows the application structure of the breathing maskarrangement according to the invention, in an assembly condition inwhich the docking port 8 according to the invention is inserted into theinsert opening formed in the carrier portion 7 and correctly fixed inposition by way of the bayonet closure device provided in the region ofthe insert opening. In this embodiment, the docking port 8 forms aconduit member which is in the nature of a pipe bend and by which theflow of respiratory gas flowing by way of the hose connecting sleeve 9(FIG. 1) is diverted through an angle of about 30° towards the tip ofthe nose of the user of the mask. Feeding the respiratory gas in thatway to the internal space in the mask, which is defined by the arch body2 (FIG. 1), provides that the gas advantageously flows over the bridgeof the nose of the user of the mask.

[0095] The modular structure of the breathing mask arrangement accordingto the invention makes it possible to implement a configuration of thebreathing mask arrangement, which takes better account of the respectivesituation of use. The docking port 8 which is fitted into the carrierportion 7 has an insert connecting portion 28 which projects beyond thecarrier portion 7 towards the frame portion 3. An insert opening portionof the arch body 2 can be fitted on to the insert connecting portion 28,with slight elastic expansion. Provided on the insert connecting portion28 is a peripheral bead 34, by which the arch body 2 and the insertconnecting portion 28 are held in a defined joint position. Thatperipheral bead 34 can come into engagement with an internal peripheralgroove correspondingly provided in the arch body 2, or it can fit on aninternal surface of the arch body 2. The carrier portion 7 and thedocking port 8 are of such a configuration that the docking port 8 formsa respiratory gas conduit portion which bridges over the region of thebridge of the nose. That ensures that the field of vision is onlyslightly impaired.

[0096]FIG. 5 shows a further perspective view of the integral memberforming the frame portion 3. The guide flanks 30 which are made in onepiece with the frame portion 3 are of such a configuration thatapplication of a release force to the actuating zones 33 urges the guideflanks 30 away from each other in the region of the arcuate guide means31. In the present embodiment, for that purpose, a lever/tilting effectis produced by an arcuate leg 35. The return movement of the guideflanks 30 in the region of the arcuate guide means 31 takes place as aconsequence of the elasticity of the material involved. The fixingeffect can be achieved by virtue of frictionally locking clamping of thecontact zones of the coupling portion 32, which are guided between theguide flanks 30. As an alternative thereto or in combination therewith,it is also possible to achieve the fixing effect by coupling inpositively locking engagement, for example by the adoption of a finetooth arrangement.

[0097] Preferably, there is provided an abutment device which limits themaximum range of pivotal movement of the forehead support device 10 withrespect to the frame portion 3. It is possible for that abutment deviceto be so designed that, for example by increasing the actuating forcesapplied to the actuating zone 33, the abutment device is moved into acondition in which the forehead support device 10 can be separated fromthe pivot structure connected to the frame portion 3.

[0098] The view illustrated in FIG. 5 also shows an outwardly recessedregion 36 in the frame portion 3, which improves positioning and fixingof the arch body 2 in the frame portion 3. Positioning of the arch body2 in the frame portion 3 is further promoted by two fixing plates 37which are provided in the region of the holding loops 4 at the undersideof the frame portion 3 and which engage into clamping pocket portionsprovided in the transitional region of the sealing lip means 1 in thearch body 2. The frame portion 3 is of a substantially saddle-shapedsilhouette and attains its maximum width in a region of the frameportion 3, which in the application position of the breathing maskarrangement is approximately at the height of the sides of the nose ofthe user of the mask. The holding loops 4 extend upwardly from that zoneB of maximum width to the region of the eyes of the user of the mask.The inward edges of the through openings which are bordered by theholding loops 4 are of a rounded configuration in order to prevent theband portions which are passed through those openings from possiblybeing chafed through. This view again shows the latching device adaptedfor fixing the docking port in the carrier portion 7.

[0099]FIG. 6 shows the fixing plates 37 which are provided at theunderside of the frame portion 3, from another perspective. The fixingplates 37 are of a thickness t as measured transversely to the joiningdirection in the range of from 0.8 to 3 mm. The fixing plates are of atapered configuration in the joining direction. The fixing plates 37 andin particular also the internal peripheral region of the frame portion3, which region bears against the arch body 2, can be provided with aprofiling which still further assists with coupling of the arch body.Preferably, fine profile grooves extending in the peripheral directionof the frame portion 3 are provided on the frame portion 3 and on theportion of the arch body 2, which bears thereagainst.

[0100] The bayonet connecting structure 25 on the carrier portion 7includes an end abutment 38 for defining the end position of the dockingport 8 in the coupling position. In this embodiment the bayonetconnecting structure 25 is designed in such a way that the maximumfixing force is achieved in the end position defined by the end abutment38.

[0101]FIG. 7 shows the breathing mask arrangement according to theinvention—with the exception of the forehead cushion elements 14 (FIG.1)—in the completely assembled condition, from the direction of thepivot axis X. As can be seen in that view the docking port 8 which inaccordance with the invention can be releasably inserted into thecarrier portion 7 forms a coupling element for coupling the elastomerarch body 2 to a rotatably supported hose connecting sleeve 9, by whichthe feed flow of respiratory gas is deflected through an angle α whichin this embodiment is 32°.

[0102] The docking port 8 can be selected from a set which includes aplurality of docking ports 8 and forms an interface member by which thearch body 2 can be coupled to different hose systems. Compatibility withdifferent respiratory gas conduit systems can also be ensured by way ofthe hose connecting sleeve 9 which is fitted on to the docking port 8.It is possible to provide a plurality of sealing lip means which arerespectively adapted to given types of faces and to achieve aconfiguration which is appropriate to the requirements involved, for thebreathing mask arrangement according to the invention, in that anelastomer element which takes particularly good account of theindividual facial architecture of the user of the mask and whichcomprises the sealing lip means 1 and the arch body 2 is integrated intothe mask arrangement according to the invention. It is also possible toprovide a plurality of variants of the forehead support device, whichhowever are compatible with the adjusting means 11, and to fit the maskarrangement according to the invention with a variant of the foreheadsupport device 10 which takes particularly good account of theindividual facial architecture. As an alternative to the foreheadcushion elements shown in FIG. 1, the forehead support device 10 mayalso be fitted with other kinds of forehead cushion devices forcushioned contact against the forehead of the user of the mask. It ispossible to integrate cushion devices of that kind, for example into anupper forehead band arrangement, and to fit the forehead support deviceon to that cushioned forehead band arrangement, for example by way of ahook-and-loop fastener structure.

[0103] The invention is not limited to the preceding embodiment. By wayof example, it is also possible to fit into the frame portion 3 which isdesigned in accordance with the invention, an arch body 2 which is notmade from an elastomer material.

[0104] The forehead support device shown in FIG. 8 has a holding device41 for pivotably holding a contact element 42. The holding device 41 forthat purpose includes a pivotable holder 43 which here has a pluralityof fixing elements 44 which form part of a ball joint arrangement.

[0105] In the embodiment illustrated here, the contact element 42 is ofa plate-like configuration and is formed from an elastomer material,here fully transparent silicone rubber. The contact element 42 ismounted tiltably about at least two axes in space by way of the fixingelements 44. In order to ensure as easy mobility as possible of thecontact element 42, provided between the fixing elements 44 and a fixingshank portion (not visible) of the contact element 42 is a ring bodywhich has a spherical external surface (details in relation thereto willbe described more fully with reference to FIG. 9).

[0106] The holding device 41 further includes a coupling portion 45 forcoupling the holding device 41 to a breathing mask 46.

[0107] In the embodiment illustrated here the coupling portion 55 is inthe form of a ring-like element which can be fitted directly on to aconnecting portion 47 of the breathing mask 46, the connecting portion47 being of a correspondingly complementary configuration. In theembodiment illustrated here the holding device 41 is provided with afixing portion 48 and can be connected by way thereof to a headband.

[0108]FIG. 9 shows a preferred embodiment of the contact element 42. Thecontact element 42 is formed from an elastomer material and has acontact surface 49 which is slightly concavely curved. The contactelement 42 is provided with a plurality of fine through bores 50 throughwhich pressure equalisation with the ambient atmosphere can be achievedin respect of the intermediate space possibly defined between thecontact element 42 and the forehead of the patient. That advantageouslyprevents the contact element 42 from being sucked against the foreheadregion of the patient.

[0109] In the embodiment illustrated here the contact element 42 has ashank portion 51. Provided on the shank portion 51 is a ring element 52which forms a spherical external surface. In conjunction with that ringelement 52, this arrangement affords a comparatively easily movable balljoint device. As an alternative thereto it is also possible to foregothe ring element and to provide the corresponding spherical portiondirectly on the shank portion 51 of the contact element 42.

[0110] The embodiment of the invention shown in FIG. 10 has two contactelements 42 which are connected together by way of an integral centralbridge or strap 54. The central strap 54 is so designed that it stillpermits pivotal movement and tilting movement of the two contactelements 42 relative to each other over a sufficient angular range. Thespacing of the centres of the two contact elements 42 from each otherpreferably approximately corresponds to the distance between the eyes ofthe user of the mask.

[0111]FIG. 11 shows a further embodiment of a contact element 42, inwhich case tiltability of the portion of the contact element, whichforms the contact surface, is achieved by way of an elastomer structure55 which here is formed integrally with the contact element 52. In theembodiment illustrated here the elastomer structure includes asubstantially spherical internal space which can be fitted on to aspherical trunnion portion, with temporary elastic expansion. In theembodiment illustrated here the contact element also has a concavelycurved base body which is flattened when the contact element isappropriately fitted in position.

[0112] The curvature of the base body of the contact element ispreferably so selected that a defined distribution in terms of contactpressure is afforded when it is applied to a flat surface. Thatdistribution in respect of contact pressure is shown by way of examplein FIG. 12. The lower curved line a1 in this case symbolises the contactsurface of the contact element in its initial position. The line a2which is shown here as being straight symbolises the contact surface ofthe contact element 42, when appropriately deformed in the applicationposition. The distribution in terms of surface pressure, which isindicated here in simplified form by an assembly of arrows 56, occurs inthe context of deformation of the contact surface of the contactelement. The distribution in terms of surface pressure is selected herein such a way that, starting from the centre Z towards the edge region,there is initially a substantially uniform distribution in terms ofsurface pressure, with the surface pressure gradually decreasing in theregion of r/5 towards the edge R.

[0113] The invention is not limited to the embodiments describedhereinbefore. For example, it is also possible, in a departure from theplate-shaped configuration selected here, for the forehead contactelements to be of a rectangular or polygonal configuration.

[0114]FIG. 13 shows a front view illustrating the surface of the face ofa user of the mask. For application or fitting of a breathing maskarrangement it is applied for example to the face of the mask user insuch a way that a sealing lip contact zone 201 defined by a sealing lipdevice of the breathing mask arrangement and the surface of the face ofthe mask user, starting from the upper lip region 202, extends aroundthe nostrils 203 to the bridge of the nose 4 and preferably passesacross same at the level of the eyes.

[0115] The breathing mask arrangement is supported on the foreheadregion of the mask user by way of a forehead support device which willbe described in greater detail hereinafter. Preferably support on theforehead region is implemented by way of two contact zones 207, 208which are disposed above a transverse line 206 which joins the eyebrows205. In the view illustrated here support for the breathing maskarrangement in the forehead region is implemented at two contact zones207, 208, wherein the spacing of the centroids S1, S2 of the contactzones 207, 208 preferably approximately corresponds to the spacingbetween the eyes of the mask user. The contact pressure of the sealinglip device of the breathing mask arrangement in the region of thesealing lip contact zone 201 is adjustably variable insofar as contactelements provided for affording contact in the contact zones 207, 208are pivotable about pivot axes X0, X1, X1′, X2, X2′ and preferably alsoabout a transverse axis Y0.

[0116] Support for the breathing mask arrangement on the face of themask user can be implemented by the application device which isdescribed in greater detail hereinafter, in such a way that thebreathing mask arrangement and the forehead support device are supportedon the face of the mask user substantially at three mutually spacedzones. In the forehead region in that case the forehead support deviceis supported at the contact zones 207, 208. The breathing maskarrangement is supported on the face of the mask user by way of thesealing lip contact zone 201. The fact that the application device andthe breathing mask arrangement are supported on the face of the maskuser at three main supporting zones advantageously provides that thebreathing mask is supported in a statically defined manner. The holdingforces required for holding the forehead support device in the foreheadregion are preferably applied by way of an upper headband arrangement.For fixing the breathing mask arrangement in the nose region, there ispreferably a lower belt arrangement, by way of which the breathing maskarrangement is urged against the surface of the face of the mask user bypulling forces 209 and 210 which act thereon at both sides and which aredirected laterally relative to the cheeks. The pulling forces 209, 210are preferably applied by a lower belt arrangement which is passedaround the region of the back of the head of the mask user.

[0117] The pivot axes X0, X1, X1′, X2, X2′ which permit adjustment ofthe support configuration of the forehead support device preferablyextend directed away from the forehead region towards the upper lipregion 202 of the user of the mask. The axes X1, X2 which are shown hereare oriented in mutually parallel relationship and spaced from eachother by a spacing a which substantially corresponds to the width of thebridge of the nose, in particular the width of the bridge of the nose inthe region of the tear duct openings of the mask user.

[0118] The pivot axes X1′, X2′ which are inclined relative to each otherhere are also preferably spaced in the region of the width a of thebridge of the nose, at the level of the contact zones 207 and 208. Theaxes X1′, X2′ are inclined relative to each other at an angle α which ispreferably so selected that the two axes intersect in the region betweenthe base of the nose and the chin 211 of the mask user.

[0119]FIG. 14 as a perspective view shows an adjusting drive 212, by wayof which the pivotal position of a left arm element 214 and a right armelement 215 can be altered adjustably with respect to a base portion216.

[0120] In this case the adjusting drive 212 includes a coupling member217 associated with the left arm element 214 and a coupling member 218associated with the right arm element 215.

[0121] Each of the two coupling members 217, 218 is provided with atleast one engagement portion 219, 221 which is in engagement with anadjusting wheel 222 which is shown here in a position of having beenlifted off, by way of a spiral structure 223 provided at the undersideof the adjusting wheel 222 (see the sketch at bottom right). By rotatingthe adjusting wheel 222 about its axis of rotation 224, the engagementportions 219, 221, as indicated by the arrow symbols 225, 226, aredisplaced in the radial direction jointly with the coupling members 217,218.

[0122] In the illustrated embodiment the coupling members 217, 218 arecoupled movably to the left and right arm elements 214, 215 respectivelyassociated therewith. In the illustrated embodiment coupling of thecoupling members 217, 218 to the arm elements 214, 215 associatedtherewith is effected in each case by way of a hinge portion 227 and 228respectively which permits a pivotal movement of the coupling member217, 218 with respect to the arm element 214, 215 associated therewith.The arm elements 214, 215 are coupled to the base portion 216 by way ofa hinge connection 229, 230. The hinge connections 229, 230 are here inthe form of film hinges. In this case the arm elements 214, 215 areformed integrally with the base portion 216. The hinge connections 229,230 define the pivot axes X1, X1′ and X2, X2′ respectively referred tohereinbefore in connection with FIG. 1. As a consequence of the pair offorces applied to the respective arm element in the region of the hingeportions 227, 228 and the hinge connections 229, 230, the respective armelement can be moved with respect to the base portion 216 into a pivotalposition which is defined by the radial spacing of the engagementportion 219, 221 from the axis of rotation 224. The maximum radialstroke movement of the engagement portions 219, 221 and the spatialposition of the hinge portions and the hinge connections 227, 228, 229,230 are so selected that, for example in a range of rotary movement ofthe adjusting wheel 222 through an angle of rotation of 540°, it ispossible to adjust a pivot angle β of the arm elements 214, 215 in therange of from 0 to 40°.

[0123] The adjusting wheel 222 is made from a plastic material andfitted by way of a central rotary trunnion or projection (not visiblehere) into a bore 231 provided in the base portion 216. Here theadjusting wheel 222 is of a diameter of 45 mm and on its outside it isprovided with a marking 232 which indicates the adjusting effectachieved by rotating the adjusting wheel 222.

[0124] In the embodiment illustrated here the base portion 216 iscoupled by way of a further hinge connection 233 to a holding portion234. The hinge connection 233 illustrated here defines the pivot axis Y0indicated in FIG. 13. The pivotal movement of the holding portion 234with respect to the base portion 216 is effected in the same manner asdescribed hereinbefore with respect to the left and right arm elements214, 215 by way of a coupling member 235 which is in engagement with theadjusting wheel 222 by way of an engagement portion 236 and is movablein the radial direction with respect to the axis of rotation 224, asindicated by the arrow symbol 237. The holding portion 234 is connectedto a mask base body portion of a breathing mask arrangement by way of anintermediate structure which is not shown in detail here.

[0125] Mounted to the left and right arm elements 214, 215 as will bedescribed in greater detail hereinafter, are contact pads by way ofwhich the arm elements 214, 215 bear against the contact zones 207, 208(FIG. 13) of the mask user.

[0126] As will also be described in greater detail hereinafter, the armelements 214, 215 can be pulled onto the forehead region of the maskuser preferably by way of an upper headband arrangement.

[0127]FIG. 15 shows a further variant of the adjusting drive 212 inwhich a coupling member 218 which is movable radially relative to theaxis of rotation 224 of the adjusting wheel 222 is formed in one piecewith the arm element 215 associated therewith, in which case sufficientpivotal mobility is achieved by way of a film hinge structure 238. Thebase portion 216 is also formed in one piece with the arm element 215and is coupled thereto similarly to the embodiment shown in FIG. 14 byway of a hinge connection 230 which is also in the form of a film hinge.The portions at which forces are applied, as defined by the film hingestructure 238 and the hinge connection 230, are spaced from each otherin such a way that, as a consequence of the radial stroke movement ofthe coupling member 218 which can be adjusted by the adjusting wheel222, it is possible to achieve an adequate pivotal angle β of the armelement 215.

[0128] The adjusting wheel 222 is rotatably mounted on a rotary trunnionor projection 239 which stands up from the base portion 216. Theunderside of the adjusting wheel 222, which faces towards the baseportion 216, has the spiral structures, like the above-describedembodiment, which are in engagement with the engagement portion 221provided integrally with the coupling member 218.

[0129]FIG. 16 sets out a further embodiment of the adjusting drive 212.In this case also the adjusting drive 212 includes an adjusting wheel222 coupled rotatably to the base portion 216 by way of a rotarytrunnion or projection 240. Provided on the underside of the adjustingwheel 222, which faces towards the base portion 216, is a spiralstructure 241 which is directly in engagement with an engagement portion219′ provided on the arm element 214. The arm element 214 is pivotablymovably coupled to the base portion 216 by way of a hinge connection 229which in this case also is in the form of a film hinge. Rotation of theadjusting wheel 222 about the axis of rotation 224 defined by the rotarytrunnion 214 makes it possible to set different spacings of theengagement portion 219′ from the axis of rotation 224, whereby the armelement 214 is pivotable with respect to the base portion 216 intorespectively desired pivotal positions.

[0130]FIG. 17 shows a further embodiment of an adjusting drive 212according to the invention, in which the base portion 216 and the armelement 214 are in the form of separate parts which are coupled togetherby way of a hinge device 243. Provided on the arm element 214 is a knob244 to which the coupling member 217 is pivotably mounted. Similarly tothe embodiments described hereinbefore, the coupling member 217 has anengagement portion 19 which is in engagement with the adjusting wheel222 by way of a spiral structure 223. By rotation of the adjusting wheel222, the coupling member 217 can be displaced in a defined manner in theradial direction and, in so doing, pivots the arm element about thehinge device 243 into a defined angular position with respect to thebase portion 216. It is possible to provide braking means, by which theadjusting wheel 222 is sufficiently firmly fixed in the desiredrotational position. Braking devices of that kind can be embodied forexample by fine latching or detent projections which come into and outof engagement respectively in the course of a relative movement of thecomponents which are moved relative to each other, such movement beingmade possible by the inherent elasticity of the parts involved. It isalso possible for the spiral structure to be designed in such a way thatit is substantially self-locking.

[0131]FIG. 18 shows an application device according to the inventionwith a breathing mask arrangement 244 accommodated therein. Thebreathing mask arrangement 244 includes a mask base body 245 and asealing lip device 246 which is coupled thereto. The sealing lip device246 is made from an elastomer material, preferably fully transparentsilicone rubber, and in the application position sealingly contacts thesealing lip contact zone 201 of the mask user, as is shown in FIG. 13.The feed of the respiratory gas into the interior of the mask which isdefined by the mask base body 245 is effected by way of a flexibleconduit portion 247 which in the illustrated embodiment is also madefrom an elastomer material and is in the form of a bellows structure.Connected to the flexible conduit portion is a breathing hose connectingportion 248 which is of an inside diameter in the range of between 12and 35 mm. The breathing hose connecting portion 248 is coupled to thebase portion 216 of the forehead support device. The forehead supportdevice 216 includes the adjusting wheel 222 which here is disposed in anintermediate region between the flexible conduit portion 247 or thebreathing hose connecting portion 248 and the base portion 216. Theadjusting wheel 222 can be turned by the user of the mask by grippingaround the flexible conduit portion 247, by way of the fingertips of thethumb and the index finger of the user of the mask. Rotating theadjusting wheel 222 makes it possible for the arm elements 214 and 215to be pivoted about the pivot axe Xn. In that way it is possible for aforehead pad 249 which is provided for making contact with the foreheadregion of the mask user to be adjustably positioned with respect to thebase portion 216. Provided on the arm element 215 (214) is an eyeportion 250, through which a portion of an upper headband arrangement251 is passed.

[0132] In the embodiment illustrated here the base portion 216 ispivotably movably connected to a holding portion 234 by way of the hingeconnection 233. The holding portion 234 is of a frame-like configurationand embraces the mask base body 245 at least in the side region thereof.Also provided on the holding portion 234 are eye portions 250 throughwhich a portion of a lower headband arrangement (not shown) can bepassed. As an alternative to the design configuration involving the eyeportions 252 or also in combination therewith, it is possible to provideother coupling structures for coupling the holding portion 234 or themask base body 245 to a headband arrangement.

[0133] Pivotal movement of the base portion 216 about the pivot axis Y0which is defined by the hinge connection 233 is effected in thisembodiment simultaneously with the pivotal movement of the arm members214, 215 about the axes X1, X2.

[0134] The breathing hose connecting portion 248 is coupled to the baseportion 216. In the present embodiment coupling is effected by way of aholding foot 253 which is guided past the adjusting wheel 222. Theholding foot 253 is fitted onto a plug connecting portion of the baseportion 216 and provided with a retaining device 254 by which an endportion of a respiratory gas conduit, which is coupled to the breathinghose connecting portion 248, is additionally fixed. The forehead pads249 intended to bear against the forehead of the mask user aredisplaceably mounted to the respective arm element 214, 215.

[0135]FIG. 19 shows an application device for a breathing mask, in whichthe left arm element 214, the right arm element 215 and the holdingportion 234 can be tilted about the axes X1, X2 and Y0 respectively in adefined manner by way of the adjusting drive 212 which is actuable by anadjusting wheel 222. The tilting movement of those components iseffected in each case by way of the coupling members 217, 218 and 235which are associated with those parts. Support for the arm elements 214,215 against the forehead region of a mask user is by way of the foreheadpads 249 which have already been referred to with reference to FIG. 18and which in this embodiment can be inserted into insert openings 255provided on the respective arm elements 214 and 215.

[0136] In this case the holding portion 234 is made from a high-strengthplastic material, preferably polyamide, and is of a frame-likeconfiguration. The holding portion 234 includes two holding arms 256,257 which are each provided with a respective eye portion 252 throughwhich an end portion of a lower belt arrangement can be passed.

[0137] The holding arms 256, 257 are provided with an engagementstructure 258, 259 by way of which the holding arms can be brought intoengagement with a mask base body. Fixing of the mask base body in theholding portion 234 is further effected by a retaining or latchingprojection 260 which is formed integrally with the holding portion 234.Provided on a side of the base portion 216, which is remote from theholding portion 234, is a push-on portion 261, onto which a breathinghose connecting portion can be fitted. The breathing hose connectingportion 248, as indicated in FIG. 18, can serve to conduct therespiratory gas into the interior of the mask, as is defined by a maskbase body.

[0138]FIG. 20 shows an application device which is provided with abreathing mask arrangement 244 and which, similarly to the embodimentsdescribed hereinbefore, includes an adjusting drive 212, by way of whichthe arm elements 214, 215 which project on both sides from a baseportion 216 of the adjusting drive 212, can be adjustably pivoted. In adeparture from the embodiments described hereinbefore, in this case themask base body 245 is tiltable, independently of the adjusting movementof the arm elements which is caused by the adjusting drive 212, about apivot axis Y1 which extends approximately in the region of the zone ofthe sealing lip device, which is adjacent to the nostrils of a maskuser, and which extends substantially parallel to a transverse line 206joining the eyebrows. The pivotal position of the mask base body 245with respect to the holding portion 234 can be fixed by an arrestingdevice 262. A sufficient relative mobility of the mask base body 245with respect to a breathing hose connecting portion 248 provided for theconnection of a respiratory gas conduit is achieved by a flexibleconduit portion 247, as is provided also in the embodiment shown in FIG.18. In this embodiment the mask base body is preferably producedintegrally with a sealing lip device 246 from a elastomer material,preferably silicone rubber. The breathing hose connecting portion 248 inthis embodiment is rigidly coupled to the base portion 216 and is madefrom a hard thermoplastic material.

[0139] Mounted to the arm elements 214, 215 there are also forehead pads249′ which are provided to bear against the surface of the forehead ofthe mask user, the forehead pads 249′ being suspended tiltably ontrunnions or projections 262 which are formed integrally with therespective arm element 215, 214. Disposed between the trunnions 262there is again an eye portion 250 for passing therethrough an endportion of an upper band arrangement. It is possible for the baseportion 216 to be guided displaceably on an arm portion 253 a whichextends from the holding portion 234 to the holding foot 253. That makesit possible for the vertical spacing of the forehead support device fromthe sealing lip device 246 also to be variably altered.

[0140]FIG. 21 shows a further embodiment of the holding portion 234, ascan be used for example in relation to the embodiments shown in FIGS. 19and 20. The holding portion 234 is provided with a coupling structurewhich is provided for coupling a mask base body (not shown here) and bymeans of which the mask base body can be coupled to the holding portion234 in different coupling positions.

[0141]FIG. 22 shows a forehead support device which can be fitted by wayof a breathing hose connecting portion 248 onto a connecting part 264 ofa breathing mask which is indicated here.

[0142] The breathing hose connecting portion 248 is coupled to a baseportion 216 of the forehead support device by way of a holding foot 253.By way of an adjusting wheel 222 arranged between the breathing hoseconnecting portion 48 and the base portion 216 the coupling members 217,218 are adjustably movable in a direction radially with respect to theaxis of rotation 224 of the adjusting wheel 222. The arm elements 214,215 are definedly pivoted about the axes X1, X2 by suitable positioningof the coupling members 217, 218.

[0143] Mounted to the arm elements 214, 215 are forehead contact pads249 by way of which the arm elements 214, 215 are supported on theforehead region of a mask user. Provided in the region of the foreheadpads 249 on the arm elements 214, 215 are eye portions 250 through whichthe respective end portion of an upper belt arrangement can be passed.

[0144]FIG. 23 shows a forehead support device which can be used forexample in conjunction with the breathing mask 200 shown in FIG. 35.This forehead support device includes a forehead support portion 201which is made from a soft material, in particular elastomer material,and which can be applied in the forehead region of a mask connector byway of an upper headband portion of a headband arrangement (see in thatrespect FIG. 37). In this embodiment the forehead support portion 201includes two tongue portions 202 through which a fixing band portion ofthe headband arrangement can be passed. Mounted on the forehead supportportion 201 is a coupling structure 203 by way of which a conduitconnecting element 204 is supported at a spacing determined by thegeometry of the coupling structure in front of the lower support surface205 of the forehead support portion. In this embodiment the conduitconnecting element is also formed from an elastomer material andincludes two joining openings 206, 207 by way of which the conduitconnecting element 204 can be sufficiently firmly fitted on to two limbportions 208, 209 of the coupling structure 203.

[0145] The conduit connecting element 204 and the coupling structure 203can be of such a configuration that the conduit connecting element 204can be steplessly positioned relative to the forehead support portion201 in the direction of the axis X1 indicated here. Further adjustmentoptions in respect of the position of the conduit connecting element 204relative to the forehead support portion 201 can be embodied also by theprovision of different possible ways of coupling the coupling structure203 to the forehead support portion 201. In the embodiment illustratedhere it is possible for the longitudinal limbs 208, 210 which here passin pairs through the forehead support portion 201 to be supporteddisplaceably in the forehead support portion 201. The dimensions of thelongitudinal limbs 209, 210 and the through passages provided in theforehead support portion for passing the longitudinal limbs therethroughare preferably established in such a way as to ensure adequatelyfrictional fixing of the coupling structure 203 in the desired relativeposition.

[0146] The coupling structure 203 forms a through passage 212 which isof such a size that a connecting tube portion of a breathing mask (seein that respect FIG. 35) can be fitted thereinto. The through passage212 is further of such a dimension that a breathing gas hose can befitted therein, on a side remote from the breathing mask, by way of awashing-out valve arrangement.

[0147] The spacing between the support surface 205 of the foreheadsupport portion 201 and the coupling structure 203, which is requiredaccording to the individual facial structure of the user of the mask,can be adjusted by the provision of various coupling structures 203 orby plastic deformation, for example bending of the coupling structure203.

[0148]FIG. 24 shows a further embodiment of a forehead support device.This forehead support device also includes a forehead support portion201 which is made from a sufficiently elastically deformable material,preferably silicone rubber. A conduit passage element 204 a is supporteddisplaceably by way of an adjusting device 214 on the forehead supportportion 201. The conduit passage element 204 a can be of a configurationsimilar to that described hereinbefore with reference to FIG. 23 as aconnecting element by way of which coupling of a connecting portion onthe mask side to a respiratory gas conduit is permitted. As analternative thereto it is also possible for the conduit passage element204 a to be of such a design configuration that it merely embraces arespiratory gas conduit portion and in so doing couples it adjustably inrespect of height to the forehead support portion 201.

[0149] In this embodiment the adjusting device 214 includes twoadjusting drive devices 215 by way of which the spacing of the centralaxis Z of the conduit passage element 204 a with respect to the supportsurface 205 of the forehead support portion 201 is steplesslyadjustable. In this embodiment the adjusting drive devices 215, 216 areprovided with internally threaded sleeves which are manually rotatableby way of a knurling provided on the external periphery thereof. Theinternally threaded sleeves are in engagement with screwthread portions(not shown) of adjusting screws 217, 218 so that manual rotation of therespective internally threaded sleeve causes the effective length of astrut formed by the internally threaded sleeve and the adjusting screwin engagement therewith to be steplessly adjustable. The spacing of theconduit connecting element 204 a can also be individually adjusted bythe user of the mask by varying the effective length of those struts.

[0150] Coupling means for coupling the forehead support portion to aheadband arrangement are also provided on the forehead support portion201. In this embodiment those coupling means are afforded by loopelements 220, 221.

[0151] As can be seen from FIG. 25 the forehead support portion 201 isprovided with support locations 222, 223 in which the two adjustingdrive devices 215, 216 are respectively anchored on one side. Alsoprovided on the conduit passage element 204 a are support locations 224in which the end portions of the adjusting screws 217, 218 aresufficiently non-rotatably anchored.

[0152] The arrangement is here such that the operative length of thestructure coupling the conduit passage element 204 a to the respectivesupport locations 222, 223 is steplessly variable by actuation of thetwo adjusting drive devices 215, 216. By rotation of the internallythreaded sleeves which are indicated here and which are knurled on theoutside periphery (see the arrow symbols in FIG. 24), it is possible toadjust the position of the conduit passage element 204 a relative to theforehead support portion 201 both in the direction of the axes X, Yindicated here. It is further possible for the conduit passage element204 a also to be pivoted slightly in respect of the longitudinal axis Zthereof.

[0153]FIG. 26 is in the form of a detail view showing the couplingstructure implemented in the embodiment of FIGS. 24 and 25 for couplingthe forehead support portion 201 to an upper headband. The loop element220 is anchored in the forehead support portion 201 in the region ofthat headband coupling structure. The forehead support portion 201 isprovided with a tongue 227 which is thin at its end and which in theapplication position of the forehead support portion extends between theloop element 220 and the forehead of the user of the mask and in thatsituation cushions a region of the headband which passes around the loopelement 220 and promotes a gentle progressive reduction in the pressurein relation to surface area, caused by the forehead support portion 201.

[0154]FIG. 27 shows a preferred embodiment of an adjusting drive device215 as can be used in the embodiment of FIGS. 24 and 25. The adjustingdrive device 215 includes the sleeve 231 which is provided with externalperipheral knurling 230 and which has an internal bore with an internalthread structure. The sleeve 231 includes a pivot portion 232 which ishere of a spherical configuration and can be fitted rotatably into aseat element. The pivot portion 232 can be secured in the seat element233 by way of a spring ring 234 in such a fashion that the pivot portion232 is admittedly rotatable and tiltable through a sufficient angularregion, but it is anchored in the seat element 233 in such a way as tobe secured in the axial direction. A thread portion 235 of the adjustingscrew 217 is in screwthreaded engagement with the sleeve 230 in theassembled condition. Provided on the adjusting screw 217 is a fixinghead 236 which can also be fitted into a seat element 237. The couplingof the fixing head 236 to the seat element 237 is implemented, as adeparture from the manner of coupling the seat element 233 to the pivotportion 232 provided at the sleeve side, in such a way that theadjusting screw 217 is anchored substantially non-rotatably in the seatelement 237.

[0155] The adjusting drive device 215 illustrated here makes it possiblefor the spacing of the two seat elements 233, 237 to be steplesslyadjusted by individual rotation of the sleeve 231.

[0156] The conduit passage element 204 a provided in the embodiment ofFIGS. 24 and 25 can also be of such a configuration that it forms partof the respiratory gas conduit itself. Such a configuration for theconduit passage element 204 a is shown in FIG. 28. The conduit passageelement 204 a includes the support portion 238 co-operating with theadjusting drive devices and a flexible hose conduit portion 239 which isprovided in this embodiment. Provided on the hose conduit portion 239 isa push-in sleeve, by way of which a further hose conduit can berotatably connected.

[0157]FIG. 29 shows a detail view of a preferred embodiment of theforehead support portion 201 in the region of the forehead supportsurface 205 which bears against the forehead of the user of the mask.Provided in the forehead support potion 201 are caverns 240 which canprovide for a particularly uniform distribution of surface pressure inthe region of the contact surface 205.

[0158]FIG. 30 is a view in the form of a simplified section showing howthe conduit connecting element 204 or also the conduit passage element204 a can be used for coupling a connecting portion 200 a provided onthe breathing mask 200 to a further respiratory gas conduit member 200b. In this embodiment the respiratory gas conduit member 200 b formspart of a washing-out valve as is described in particular in Germanpatent application DE 198 . . . . Provided on the breathing mask 200 areloop portions 200 c, by way of which the breathing mask 200 can be fixedby means of a lower headband arrangement in the region of the nose ofthe mask user.

[0159]FIG. 31 shows a forehead support device which has substantialpoints in common with the embodiment already described hereinbefore withreference to FIG. 23. The conduit connecting element 204 (also 204 a) iscoupled by way of loop elements 243 to the forehead support portion 201.Adjustment of the spacing of the central axis Z of the conduitconnecting element 204 relative to the underside (contact surface 205)of the forehead support portion is achieved in this case in that theloop elements 243 can be fitted into suitably selected bores 244.Depending on which bores 244 are selected for anchoring the loopelements 243 at the forehead support portion, that affords differentspacings of the central axis Z relative to the contact surface 205. Theforehead support portion 201 can be fixed by way of fixing straps 245 toan upper headband arrangement 246. In this embodiment the upper headbandarrangement 246 includes a band portion 247 which extends between thetwo fixing straps 245 under the forehead support portion 201 and in thatcase additionally cushions the forehead support portion against theforehead of the mask user.

[0160]FIG. 32 shows a forehead support device for supporting a breathingmask arrangement against the forehead, which also permits steplessadjustment of the support height. In this embodiment a conduitconnecting element 204 which can be fitted on to a connecting portion ofa breathing mask is pivotably coupled to the coupling structure 203. Inthis embodiment the coupling structure 203 is in the form of a bent wiremember as is shown by way of example in FIG. 33. The coupling structure203 in conjunction with an adjusting drive device 215 forms the struttriangle indicated in the diagrammatic view at K1. The strut S1 is inthis case formed by the coupling structure 203, the strut S2 is formedby the conduit connecting element 204 and the strut S3 by the adjustingdrive 215. A preferred structure of the adjusting drive 215 isillustrated in FIG. 34. The adjusting drive in FIG. 34 includes ascrewthreaded spindle 250 which is pivotably but non-rotatably coupledto the coupling structure 203 by way of a pivot head 251 as can be seenin FIG. 32. The screwthreaded spindle 250 is in engagement with aninternally threaded sleeve 231 which in turn is anchored rotatably byway of a seat element 233 in a radially projecting portion 252 of theconduit connecting element 204. Rotation of the sleeve 231 makes itpossible to alter the effective spacing between the pivot head 251 andthe seat element 233 and thus to pivot the coupling structure 203relative to the conduit connecting element 204. In that way it ispossible to implement different relative positions of the lower limbs203 a relative to a breathing mask connected to the conduit connectingelement 204, and thus different forehead spacings.

[0161]FIG. 35 shows a breathing mask arrangement comprising a breathingmask 200 and a forehead support device coupled thereto. The foreheadsupport device includes an elastically deformable conduit portion 260which is here made from an elastomer material. The respiratory gasconduit portion 260 can be adjustably curved by way of an adjustingdrive device 215. In this embodiment the adjusting drive device includesa screwthread device having an internally threaded sleeve 231 which isin engagement with a screwthreaded spindle 250. Rotation of the sleeve230 makes it possible to alter the spacing between the points E1 and E2.Upon a change in that spacing the coupling structure 203 which can beseen here is elastically deformed. The deformation characteristic of thecoupling structure 203 is so selected that the cushioning 261 on thecoupling structure 203 always assumes a favourable orientation relativeto the breathing mask 200. The adjusting drive device 215, therespiratory gas conduit portion 260 and a pivotal loop element 262 forma strut triangle which in its basic structure substantially correspondsto the strut triangle described hereinbefore with reference to FIGS.32-34 and the sketch K1 contained therein.

[0162] The cushioning 261 is releasably coupled to the couplingstructure 203 so that the position of the cushioning is adjustablyvariable in the direction of the axis Z2 indicated here.

[0163]FIG. 36 shows a forehead support device having a conduit passageelement 204 a which can be fitted on to a breathing mask 200. Providedon that conduit passage element 204 a is a ball joint trunnion whichpermits rotatable and pivotable mounting of a tube sleeve element 270.The tube sleeve element 270 here includes a spherical portion 271 whichis of such a configuration that it is carried on the trunnion portion ofthe conduit passage element 204 a in substantially sealing relationshipbut sufficiently easily movably thereon. Provided on the tube sleeveelement 270 is a male screwthread portion 272 which is in threadedengagement with a coupling structure 203. The coupling structure 203includes limb portions 203 a which can be coupled to a preferablycushioned upper headband arrangement 246. By rotation of the tube sleeveelement 270 about the central axis Z, it is possible, by virtue of thescrewthread engagement between the male threaded portion 272 and thecoupling structure 203, to steplessly vary the spacing between thepoints E1 and E2. In the region of the points E1, E2 an adjusting loopelement 262 is pivotably coupled to the coupling structure 203 and theconduit passage element 204 respectively. In this embodiment the tubesleeve element 270 jointly with the coupling structure 203 forms a strutS1 in the sketch K2 illustrated here. The conduit passage element 204 a,with its portion which can be fitted directly on to the breathing mask,forms the strut S2, while in this triangle the pivotal loop element 262forms the strut S3. By altering the operative length of the strut S1 itis then possible for the tube sleeve element 270 and jointly therewiththe coupling structure 203 to be steplessly pivoted about the axis Yindicated here.

[0164] The forehead support devices described hereinbefore withreference to FIGS. 35 and 36 make it possible for the support of abreathing mask to be steplessly matched to the individual facialstructure in the region in which the mask rests on the bridge of thenose of the user. The contact pressure in the region of the bridge ofthe nose can be altered in particular in the two embodiments describedhereinbefore, without in that respect involving particular changes inthe connecting portion at the respiratory gas conduit side, afforded bythe forehead support device.

[0165]FIG. 37 shows a headband arrangement which can be used inconjunction with the above-described forehead support devices andbreathing mask arrangements for the comfortable application of abreathing mask.

[0166] The pressure of the breathing mask against the face of the usercan be afforded either by applying suitable holding forces by means ofthe upper headband arrangement 246 and a lower headband arrangement 275.It is also possible to forego the lower headband arrangement 275 and inparticular to transmit the torque required for generating the contactpressure forces in the region of the top lip by way of the loop elements246 illustrated here.

1. A breathing mask arrangement comprising an arch body, a sealing lip means for bearing against the surface of the face of a mask user, a respiratory gas conduit means for feeding respiratory gas to a mask internal space which is defined by the arch body and which is in communication with the nose and/or mouth opening of the user of the mask, and an application structure for application of the sealing lip means jointly with the arch body, wherein the application structure has a carrier portion on which a respiratory gas conduit member is releasably coupled.
 2. A breathing mask arrangement according to claim 1 characterised in that the respiratory gas conduit member is in the form of a tube connection.
 3. A breathing mask arrangement according to claim 1 characterised in that the application structure includes a frame portion.
 4. A breathing mask arrangement according to claim 1 characterised in that the frame portion is formed integrally with the carrier portion.
 5. A breathing mask arrangement according to claim 1 characterised in that the carrier portion has an insert opening and the respiratory gas conduit member can be releasably inserted into said insert opening.
 6. A breathing mask arrangement according to claim 1 characterised in that there is provided a latching device for fixing the respiratory gas conduit member to the carrier portion.
 7. A breathing mask arrangement according to claim 1 characterised in that the latching device is in the form of a bayonet or rotary latching device.
 8. A breathing mask arrangement according to claim 1 characterised in that the carrier portion is oriented substantially transversely with respect to the frame portion.
 9. A breathing mask arrangement according to claim 1 characterised in that the arch body is coupled sealingly to the respiratory gas conduit member.
 10. A breathing mask arrangement according to claim 1 characterised in that the arch body is made from an elastomer material.
 11. A breathing mask arrangement according to claim 1 characterised in that the arch body is formed integrally with the sealing lip means.
 12. A breathing mask arrangement according to claim 1 characterised in that the arch body is provided with openings for the discharge of respiratory gas loaded with CO₂.
 13. A breathing mask arrangement according to claim 1 characterised in that the application structure includes a forehead support device for supporting the arrangement in the forehead region.
 14. A breathing mask arrangement according to claim 1 characterised in that there is provided a pivot device and the forehead support device is pivotably movably coupled to the frame portion.
 15. A breathing mask arrangement according to claim 1 characterised in that the pivot device includes an arcuate track guide means and the forehead support device has a guide portion.
 16. A breathing mask arrangement comprising an arch body, a sealing lip means for bearing against the surface of the face of a mask user, a respiratory gas conduit means for feeding respiratory gas to a mask internal space which is defined by the arch body and which is in communication with the nose and/or mouth opening of the user of the mask, and an application structure for application of the sealing lip means jointly with the arch body, wherein the arch body and the sealing lip means are produced integrally from an elastomer material and can be inserted as a releasably fixable unit into the application structure.
 17. A breathing mask arrangement according to claim 16 characterised in that it can be put together in a modular mode from a frame portion, a forehead support device releasably couplable to the frame portion and an integral member comprising the sealing lip means and the arch body.
 18. A forehead support device for a breathing mask comprising a contact element which is provided in the application position for contacting the forehead region of a user of the mask, characterised by a holding device for holding the contact element in tiltably movable manner.
 19. A forehead support device according to claim 18 characterised in that the holder is in the form of a pivotal holder.
 20. A forehead support device according to claim 18 characterised in that the holder includes a pivot device.
 21. A forehead support device according to claim 18 characterised in that the pivot device is formed by an elastomer structure.
 22. A forehead support device according to claim 18 characterised in that the pivot device is in the form of a ball joint device.
 23. A forehead support device according to claim 18 characterised in that the contact element is formed from an elastomer material.
 24. A forehead support device according to claim 18 characterised in that the contact element is of a pad-like configuration.
 25. A forehead support device according to claim 18 characterised in that the contact element forms a concavely inwardly curved contact surface, wherein the curvature is so matched as to provide a defined distribution in respect of surface pressure.
 26. A forehead support device according to claim 18 characterised in that there are provided two contact elements.
 27. A forehead support device according to claim 18 characterised in that the two contact elements are connected together.
 28. A forehead support device according to claim 18 characterised in that the contact elements are formed integrally with each other.
 29. A forehead support device according to claim 18 characterised in that the pivot device is formed integrally with the contact element.
 30. A forehead support device according to claim 18 characterised in that the pivot device is of such a configuration and arrangement that it is on or near the line of action of force, which extends through a centre point in respect of surface pressure of the corresponding contact element.
 31. A forehead support device according to at claim 18 characterised in that the contact surface is so profiled as to prevent suction on the surface of the forehead of the patient.
 32. A forehead support device according to at claim 18 characterised in that the contact element is provided with holes or passages.
 33. A forehead support device according to claim 18 characterised in that at least the surface portion of the contact element, which comes into contact with the surface of the skin of the user of the mask, has a velvety matt surface.
 34. A forehead support device according to claim 18 characterised in that there are provided a plurality of coupling options in regard to coupling of the forehead support device so that different forehead spacings can be adjusted by selective coupling.
 35. An application device for a breathing mask arrangement with a forehead support device, wherein the forehead support device has a right arm element and a left arm element and the arm elements are provided with a contact portion for bearing against a left and a right forehead zone respectively of a mask user and wherein each of the arm elements is pivotably movable about a pivot axis.
 36. An application device according to claim 35 characterised in that there is provided an adjusting drive device for deflection of the arm elements into a predetermined pivotal position.
 37. An application device according to claim 35 characterised in that the pivot axes of each of the arm elements are so oriented that in a front view they extend transversely and in particular substantially perpendicularly with respect to a transverse line joining the eyebrows.
 38. An application device for a breathing mask arrangement according to claim 35 characterised in that the pivot axes are spaced from each other at the level of the transverse line.
 39. An application device according to claim 35 characterised in that the pivot axes are inclined relative to each other through an angle α.
 40. An application device according to claim 35 characterised in that in a front view the pivot axes intersect in a region between the transverse line and the chin region of a mask user.
 41. An application device according to claim 35 characterised in that the pivot axes are defined by hinge devices.
 42. An application device according to claim 35 characterised in that the hinge devices are formed by film hinge structures.
 43. An application device according to claim 35 characterised in that the adjusting drive device has an adjusting wheel which is in engagement with coupling members by way of a spiral or screwthread structure.
 44. An application device for a breathing mask arrangement comprising a forehead support device, wherein the forehead support device has a right arm element and a left arm element and the two arm elements are arranged pivotably movably by way of a pivot axis, wherein the pivot axis extends substantially parallel to a transverse line which in the application position joins the eyebrows of a mask user, and there is provided an adjusting drive device for establishing the pivotal position of the members of the application device, which are movable about the pivot axis. 